TAX DIARY MAY & JUNE 2021 26 April 2021 Share 1 May 2021 - Due date for Corporation Tax due for the year ended 30 July 2020. 19 May 2021 - PAYE and NIC deductions due for month ended 5 May 2021. (If you pay your tax electronically the due date is 22 May 2021). 19 May 2021 - Filing deadline for the CIS300 monthly return for the month ended 5 May 2021. 19 May 2021 - CIS tax deducted for the month ended 5 May 2021 is payable by today. 31 May 2021 - Ensure all employees have been given their P60s for the 2020-21 tax year. 1 June 2021 - Due date for Corporation Tax due for the year ended 31 August 2020. 19 June 2021 - PAYE and NIC deductions due for month ended 5 June 2021. (If you pay your tax electronically the due date is 22 June 2021) 19 June 2021 - Filing deadline for the CIS300 monthly return for the month ended 5 June 2021. 19 June 2021 - CIS tax deducted for the month ended 5 June 2021 is payable by today. business taxCISCIS3000Corporation taxNICP60PAYEpersonal tax BUSINESS TAX PRIVATE CLIENT TAX CONTACT US